/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.db.integration;

import org.apache.iotdb.db.service.IoTDB;
import org.apache.iotdb.db.utils.EnvironmentUtils;
import org.apache.iotdb.jdbc.Config;
import org.apache.iotdb.jdbc.IoTDBSQLException;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.sql.*;

import static org.apache.iotdb.db.integration.Constant.*;
import static org.junit.Assert.*;

public class IOTDBGroupByInnerIntervalIT {

  private static IoTDB daemon;

  private static String[] dataSet1 = new String[]{
          "SET STORAGE GROUP TO root.ln.wf01.wt01",
          "CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN",
          "CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=DOUBLE, ENCODING=PLAIN",
          "CREATE TIMESERIES root.ln.wf01.wt01.hardware WITH DATATYPE=INT32, ENCODING=PLAIN",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(1, 1.1, false, 11)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(2, 2.2, true, 22)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(3, 3.3, false, 33 )",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(4, 4.4, false, 44)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(5, 5.5, false, 55)",
          "flush",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(6, 6.6, false, 66)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(7, 7.7, true, 77)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(8, 8.8, false, 88)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(9, 9.9, false, 99)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(10, 10.0, false, 110)",
          "flush",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(11, 11.1, false, 121)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(12, 12.2, true, 220)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(13, 13.3, false, 330)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(14, 14.4, false, 440)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(15, 15.5, false, 550)",
          "flush",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(16, 16.6, false, 660)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(18, 18.8, true, 780)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(22, 22.2, false, 220 )",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(23, 23.3, false, 650)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(24, 24.4, false, 760)",
          "flush",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(25, 25.5, false, 550)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(26, 20.2, true, 220)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(27, 30.3, false, 330 )",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(28, 40.4, false, 440)",
          "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                  + "values(29, 50.5, false, 550)",
  };

  private static final String TIMESTAMP_STR = "Time";

  @Before
  public void setUp() throws Exception {
    EnvironmentUtils.closeStatMonitor();
    daemon = IoTDB.getInstance();
    daemon.active();
    EnvironmentUtils.envSetUp();
    Class.forName(Config.JDBC_DRIVER_NAME);
    prepareData();
  }

  @After
  public void tearDown() throws Exception {
    daemon.stop();
    EnvironmentUtils.cleanEnv();
  }

  @Test
  public void countSumAvgInnerIntervalTest() {
    String[] retArray1 = new String[]{
            "1,3,6.6,2.1999999999999997",
            "6,3,23.1,7.7",
            "11,3,36.599999999999994,12.199999999999998",
            "16,2,35.400000000000006,17.700000000000003",
            "21,2,45.5,22.75",
            "26,3,90.9,30.3"
    };

    try (Connection connection = DriverManager.
            getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
         Statement statement = connection.createStatement()) {
      boolean hasResultSet = statement.execute(
              "select count(temperature), sum(temperature), avg(temperature) from "
                      + "root.ln.wf01.wt01 "
                      + "GROUP BY ([1, 30], 3ms, 5ms)");

      assertTrue(hasResultSet);
      int cnt;
      try (ResultSet resultSet = statement.getResultSet()) {
        cnt = 0;
        while (resultSet.next()) {
          String ans = resultSet.getString(TIMESTAMP_STR) + "," + resultSet
                  .getString(count("root.ln.wf01.wt01.temperature")) + "," +
                  resultSet.getString(sum("root.ln.wf01.wt01.temperature")) + "," + resultSet
                  .getString(avg("root.ln.wf01.wt01.temperature"));
          assertEquals(retArray1[cnt], ans);
          cnt++;
        }
        assertEquals(retArray1.length, cnt);
      }

    } catch (Exception e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }

  @Test
  public void countSumAvgInnerIntervalTestWithValueFilter() {
    String[] retArray1 = new String[]{
            "1,1,3.3,3.3",
            "6,3,23.1,7.7",
            "11,3,36.599999999999994,12.199999999999998",
            "16,2,35.400000000000006,17.700000000000003",
            "21,2,45.5,22.75",
            "26,3,90.9,30.3"
    };

    try (Connection connection = DriverManager.
            getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
         Statement statement = connection.createStatement()) {
      boolean hasResultSet = statement.execute(
              "select count(temperature), sum(temperature), avg(temperature) from "
                      + "root.ln.wf01.wt01 where temperature > 3"
                      + "GROUP BY ([1, 30], 3ms, 5ms)");

      assertTrue(hasResultSet);
      int cnt;
      try (ResultSet resultSet = statement.getResultSet()) {
        cnt = 0;
        while (resultSet.next()) {
          String ans = resultSet.getString(TIMESTAMP_STR) + "," + resultSet
                  .getString(count("root.ln.wf01.wt01.temperature")) + "," +
                  resultSet.getString(sum("root.ln.wf01.wt01.temperature")) + "," + resultSet
                  .getString(avg("root.ln.wf01.wt01.temperature"));
          assertEquals(retArray1[cnt], ans);
          cnt++;
        }
        assertEquals(retArray1.length, cnt);
      }

    } catch (Exception e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }

  @Test
  public void countSumAvgInnerIntervalTestWithTimeFilter() {
    String[] retArray1 = new String[]{
            "1,0,0.0,null",
            "6,3,23.1,7.7",
            "11,3,36.599999999999994,12.199999999999998",
            "16,2,35.400000000000006,17.700000000000003",
            "21,2,45.5,22.75",
            "26,3,90.9,30.3"
    };

    try (Connection connection = DriverManager.
            getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
         Statement statement = connection.createStatement()) {
      boolean hasResultSet = statement.execute(
              "select count(temperature), sum(temperature), avg(temperature) from "
                      + "root.ln.wf01.wt01 where time > 3"
                      + "GROUP BY ([1, 30], 3ms, 5ms)");

      assertTrue(hasResultSet);
      int cnt;
      try (ResultSet resultSet = statement.getResultSet()) {
        cnt = 0;
        while (resultSet.next()) {
          String ans = resultSet.getString(TIMESTAMP_STR) + "," + resultSet
                  .getString(count("root.ln.wf01.wt01.temperature")) + "," +
                  resultSet.getString(sum("root.ln.wf01.wt01.temperature")) + "," + resultSet
                  .getString(avg("root.ln.wf01.wt01.temperature"));
          assertEquals(retArray1[cnt], ans);
          cnt++;
        }
        assertEquals(retArray1.length, cnt);
      }

    } catch (Exception e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }

  @Test
  public void negativeOrZeroTimeInterval() {

    try (Connection connection = DriverManager.
            getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
         Statement statement = connection.createStatement()) {
      boolean hasResultSet = statement.execute(
              "select count(temperature), sum(temperature), avg(temperature) from "
                      + "root.ln.wf01.wt01 where time > 3"
                      + "GROUP BY ([1, 30], 0ms)");
      fail();
    } catch (Exception e) {
      assertTrue(e instanceof IoTDBSQLException);
    }

    try (Connection connection = DriverManager.
            getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
         Statement statement = connection.createStatement()) {
      boolean hasResultSet = statement.execute(
              "select count(temperature), sum(temperature), avg(temperature) from "
                      + "root.ln.wf01.wt01 where time > 3"
                      + "GROUP BY ([1, 30], -1ms)");
      fail();
    } catch (Exception e) {
      assertTrue(e instanceof SQLException);
    }
  }

  @Test
  public void slidingStepLessThanTimeInterval() {

    try (Connection connection = DriverManager.
            getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
         Statement statement = connection.createStatement()) {
      boolean hasResultSet = statement.execute(
              "select count(temperature), sum(temperature), avg(temperature) from "
                      + "root.ln.wf01.wt01 where time > 3"
                      + "GROUP BY ([1, 30], 2ms, 1ms)");
      fail();
    } catch (Exception e) {
      assertTrue(e instanceof IoTDBSQLException);
    }
  }

  private void prepareData() {
    try (Connection connection = DriverManager
            .getConnection(Config.IOTDB_URL_PREFIX + "127.0.0.1:6667/", "root",
                    "root");
         Statement statement = connection.createStatement();) {

      for (String sql : dataSet1) {
        statement.execute(sql);
      }

    } catch (Exception e) {
      e.printStackTrace();
    }
  }

}
